Collapsible mandrel.



No. 766,459. PATENTED AUG. 2,1904.

E. MOXHAM. I 'OOLLAPSIBLE MANDREL. APPLICATION FILED MAR. 1. 1904.

N0 MODEL.

- I; I II r H Witnesg; I I 4 [THIGH/Z1"; M v f w,

Patented August 2, 1904.

Unrrnn STATE-S PATENT OFFICE.

COLLAPSIBLE MAND EL SPECIFICATIUI'I forming part of Letters Patent No. 766,459, dated August 2, 190 1.

Annliontim: film. March 1,1904. Serial hie. 196,032. (Noiuocleh) I zen of the United States, residing at \\;'ilniing ton, county oi i\ ewcast le, and State of Delaware,'have invented a. new and useful immovement in Collapsible hlundrels. of which the followingis a full, clear, and cxzictdescri p- 1 tion', reference'hcing had to the uccmnpnnyi ng drawings, which Torin a part of thisspQcilicntion.

My invention relates to collapsible maindreln', and'while more especially adapted for use in a machine for the rimnui'zicture of tubes from pulp, as a windingor presg-roller for receiving the layers of pulp collected from the pulp in the vat. is adapted for-any purpose for which a collapsible mandrel may he employed. i

Tli'e'ohject of the. invention is to .so construct the mandrel that it n1.'i,\ he ccmtraetocl radially to facilitate the removal endwiso of the tubes (mtuhulnr sections of pulp or other specific construction and aim-alignmentof parts, as hereinafter described and claimed,

In the drzuvings, Figure l is a side view of the roll, Fig. 2 is :1. horizontal secti n taken longitudinnll through the roll when the latter-is expanded. 'l ig. 3 is :1 vertical section taken longitudirmltv through the roll when the latter is contracted. Fig. 4 is an end Vl'\V looking toward the left-hand end of Fig The invention consists of the general and 2. Fig. 5 is an end view-looking toward the right-hand end of Fig. Fig. 6 in an end View looking toward the right l'mnd end of Fig.3. I ai) a (l are the four sections of the periphcry of the roll. Each section is tape-red in width from one end to the other. 'lhe-oppositc-ly-located sections?! and I are each widest at their right-hand ends and narrowest at their left l'iand ends and are arranged ulter' natcly with respect to the oppositely-located of levers pivo ionn c and (I, which are each widest at i lei'l-l'unid ends and narrowest at their right-hand ends. v

To expand the roll. the pair of sections u and 7/ and the pair of sections and (we moved ontwnrdlv and'in oppoite direciiorm longitudinally, sections 11 and I; being moved to the left and sections (.1 and (Z to the right. \Vh'en in such position, all the sections lit together as exactly {is-mayhe -that is, the peripheral portions and end portions. of all the sections coincide to form a true circular roll having a smooth periphery, is shown in Figs.

Land 7 i To contract the roll, the two pairs of seel'ions are moved inwardly and in longitudinal directions opposite to those in which they are moved to expandthe roll, sections 'u. and I: being moved to the-right and sections and (ll-to the left. .:\'i'.'l1en-in Such; position, the sections are out of alinenient, both around the periphery andat the ends, as shown'in Fine. 3 and 'lo give to the roll-sections the movements just described the following mechanism is provided a isahollow shaftextending through the longitudinal center of the roll. ff, Km,

and ocl, are two series of lugs on the outside of shaft (4. [Ir/Ir, &c., are a series of hugs on the inside'fof sections a and 1;. '1', &c., are a series of lugs-0n the inside of sections 0 and (1,; connecting lugs f with; lugs It. 6 l, .&c., are a series of links connecting lugs g 'with in 1'.

is a rotatable sleeve on the left-hand end of shaft 6, said sleeve being. provided with an exteriorly screi threadedportionon each side of its center, one portion havinga righthand screw and the other. portion a left-hand between collars' 41- 1: to mg lOnglhlidlllMl)". threaded s eeve m.

to the left-hand lug [4. onv section a, and the left-hand lug h on section b.

at the-other-end respectively to the left-hand lug i (in-section a "and the-left-hand lug '11 on section 117. f

'&c-., are a series of links Y screw, The threadedg'sleeve m. is confined revent it from mov-i 0 and p are nuts on the,

r 1' are a pair at one end to the nut 7) 11nd rested by the nuts and p contacting with It will be uhderstood from the foregoing description that when the threaded sleeve in is rotated the lugs 0 and will be moved away from or toward each other and the two pairs of roll-sections (L 5 and rl moved in q opposit-c'directions and either outwardly or inwardly, dependent upon whether the lugs on the roll-sections move toward or away from the radial plane in which the corresponding lugs on the shaft e are located.

More specifically, the arrangement is such, as may be seen by reference to Figs. 2 and 3, that when the threaded sleeve in is turned so as to cause the nuts 0 and to recede from each other the levers q are drawn to the left and the lugs [6 moved to the left into a posi' 'tion in radial alinernent with the respective lugs f on the shaft c, thereby causing sec tions (1 and 6 to move to the left and at the same time outwardly. Similarly the levers r are simultaneously drawn to the right and the lugs i moved to the right into a-position in radial aliiYeme-nt with the respective lugs g on the shaft 0, thereby causing sections 0 and (l to moveito the right and at the same time outwardly. I

The described outward and longitudinal movement of the sections is arrested by the contact of the nut 0 with the annular flanged end of sleeve in and of the nutp with the inner collar 11." To more certainly limit this described movement of the sections, arms a are provided on one or more of the links k and l, which arms contact with the shaft when the links are brought to a radial position, and

- thus arrest the longitudinal movement of the sections independently of the contact of the nuts 0 and p with the collars 11..

IVhen the threaded sleerevu is turned so as to cause the nuts I: and 1 to approach each other,-the lovers 1 and connected sections a and I are moved to the right and by reason of the link connection with the shaft 1 are at the' same time moved inwardly.- Similarly the l'evers 1- and connected sections 0 and (I are moved to the leftand by reason of the link connections with the shaft 6 are at the same time moved inwardly. The described. inward and longitudinal movement of the sections is necessarily areach other on reaching the ends of their re spective threads, although it will be understood that it is unnecessary to arrest the inward movement of the sections at any precise point. r

In order to hold the sections rigidly in position when the roll is expanded, the following mechanism is provided: tisashaft extending through the longitudinal center of the roll and the hollowshafte. uu are screw-threads at opposite ends of the shaft, one thread being a right-hand screw and the other a lefthand screw. w r are nuts on the right and left hand screw-threads u M, respectively.

E shaft 6'.

l l l l an is turned to drawin the roll-sections.

1/ w, &c., are radial arms extending from nuts 7. '2: out through slots :1- :r in the hollow ;1 1/ are circular heads secured to the arms in, radiating from the nuts '2 '1', respectively. 2 s, &c., are ring-sections se- 70, cured to the inside of each of the rollscc tions (1, Z, c, and d at each end of the roll,

Tlhe ring-sectionsare in such position that when the roll-sectionsare expanded, as before described, the ring-sections at each end will exactly coincide, forming a true unbroken ring extending entirely around the inner side of each end of the roll.

- The inner faces of the ring-sections z and the outer faces of the heads 3/ a re each beveled, as shown, and the diameters of the heads are such that when the heads are moved longitudinally into radial alinement with the ringsections when the roll-sections are expanded they will fit nicelywithin the ring-sections, and thereby maintain the roll in its expanded condition. The beveled faces of the heads and ring-sections permit a ready engagement between the same and at the same time allow the degree of pressure of the heads against the ring-sections to be regulated at will."

The heads are moved longitudinally into their operative positions by rotating the shaft If, this being accomplished by any desired means, as bya wrench applied to the squared end j'of shaft t. The slots a in the hollow shaft a permit the described longitudinal movement of the radiating arms 70.

l t will be understood from the foregoing description that to expand the roll the sleevem 0 is first turned until the roll-sections are brought into peripheral alinement, after which the shaft t is turned to bring the headsy within and in bearing contact with the ring-sections 2. I

To contract the roll, the shaft t is first turned to retract the heads y, after which the slelege e headsy are suitably slotted, as at 3 to permit the lovers 1 and 1- to extend through them. I 1

.A hearing t, within the hollow shaft (2, is provided for the shaft t. r

Any desired number of roll-sections may be provided.

Having now fully described my invention, I 15 what I claim, and desiretoprotect by Letters Patent, is l 1. A collapsible mandrel consisting of a plurality of longitudinally-extending roll-sew I tions tapering in width, alternate sections be- I20 ing inversely arranged, and means to move the alternate sections in either direction longitudinally, and simultaneously in opposite directions, and either outwardly or inwardly simultaneously dependent upon thedirection s of longitudinal movement, thereby contract-- ing or expanding the roll as a whole.

2. A collapsible mandrel consisting of a plurality of longitud inally-extending'roll-sections tapered in width, alternate sections be- 13 vesgss K inn ii'n'erselv arramred, mezu'is to more, said alternate sections in either direction longitudinaliv and reverse-iv to each olher, and devidscctiol'is inwardly or outwardly dctermimde upon the vicescompelling the movenicntoi s directions in which they are. moved longitudinalljr.

3. A collapsible mandrel consisting of a a plurality of longitudinally-extending roli-sec- "tions, each section being tapered in wid h, the

and longitudinally to cmitract the roll.

4. A collapsible mandrel consisting of a plurality of longitudinally-extending roll-sections tapering in width, alternate sections bein inversely arranged, and means to move the alternatescctions in either direct-ion longitudinally, and simultaneously in opposite directions and either outwardly or simultaneously dependent upon the direction of longitudinal mov'enient, and a device adapted to hold the sections rigidly in their outer positions.

5. A collapsible mandrel consisting of a plurality oflongitudinally-extending roll-sections tapering'in 'idth, alternate sections being invers ly arranged, and means to move the. alternate sections in either direction iongitudinaliv, and simultaneously in opposite directions, and either outwardly or inwardly simultaneously'depcndent upon the direction of longitudinal movement, thereby contracts. ing or expanding the roll as a whole, adevicetions, a shaft extending along the axis of the roll, means tosimultaneonsly more one or i more sections iongltudinally in one direction and one or more sections longitudinally in the opposite direction, and a series of links conmeeting said shaft and roll-sections to cause said sections to move toward or from the rollaxis in their longitudinal movement.

T. A collapsible mandrel cons" :ting of a plural it v of longitwlinallyextending roll-sections, a hollow shaft extending through the roll. mnnections between said shaft and rollsoctions whereby said sections are given a sinmhancous longitudinal and outward movement, a shaft extending through said hollow shaft. a head within the roll, connections, extending through said hollow shalt, between said inner shaft and head, and adapted to be erated by said shaft to cause said head to engage said sections and maintain them in their outcr msitions.

8. A collapsible mandrel consisting of a in waroly 5 l plurality oi longitudinall \'-extcnding roll-scri tions. a hollow slnd't extending through the roll and provided with loneiludinallv-cxtoniling slots, means to more said sccliioi'is longitudinally. a series oi links connecting said shall and rolltations to cause said sections f to more toward or from the roll-axis in their l('rii; "ltl-iiiildl movcnun'il. a shaft exti'rnding' through the hollow shaft. ahead within the roll. connectioi'is, extending through the slots in said hollowshai't, between said inner shaft and head and adapted to be operatedliy said iaft to more said head longitudinally and thereby cause said head to engage said sections and maintain them in their outer positions.

i l plurality of longitudinally-nxtending' roll-se-cl Lions, a shaft extendingalongthh axis of=the l roll, a. sleeve on said shaft, having right 'and l left hand screw-threads, a nut on eaehscrcwl thread, levers respectively connecting said 1 nuts and roll-sections, whereby the-turning of said sleeve imparts a longitndinal-niotement in one direction to the section or sections I connected with one nut, and a longitudinal movement in the other direction to the section or sections connected with the other nut, and connections between said shaft a'nd rollsect ions adapted to compel the outward or ini piurality'of long'itudinally-extcndingroll-sec:

sections, whereby the turning of .said sleeve lions. links connecting said shaft and roll-sections adapted to compel the outward or inward movement of said roll-sections dependent 15pm] the longitudinal direction in which they are. moved, and a head to hold said sections in their outer or expanded positions.

I i l. I plnraiity of longitudinall vextending roll-sections, a hollow shaft extending-through the roll provided with longitudinally-eaten!ling: slots. a threaded sleeve on said shaft, a nuton said sleeve, levers connecting said nut and rolland roll-sections, a threaded shaft extending ed shaft, a head within the roll, and connections, extending through the slots inthe hollow shaft, between the last-named nut and the head.

' '12. A collapsible mandrel consisting of a tions taperingin width, alternate sections being inversely arranged, a sleeve having right and left hand screw-threads, a nut on each screw-tln'ead, and levers connecting the nuts 9. A collapsible mandrel ,r-onsisting, 0H1;

tions, a shaft extending along the axis of the roll, a threaded sleeve on said shaft, a nuton; said sleeve, levers connecting said out and rolliniparts a longitudinal movement to said see sections, links connecting said hollow shaft' through the hollow shaft, a tint on 'said thread ward movement-of said roll-sections depend- A collapsible mandrel consisting of a I 25 plnralityof longitudinally-extending roll-secwith the invcrsely arranged i-oll-secti oi'is'respeetively.

13. A collapsible mandrel consisting of a plurality of longitudinally-exteiiclingroll-seetions tapering in width, alternate sections be ing inversely arranged, means to move tlical ternate sections in either direction longitudinally and simultaneously in opposite directions, a shaft within the roll, and links eonnecting the shaft and the roll-sections to com {ml the latter to move simultaneously outwardly or inwardly in their siiiiultaneouslon gitudinal movement.

14. A collapsible mandrel consisting of a plurality of longitudinally-extending rol l-sec tions, means to move said sections outwardly, aring-section on each roll-section, a head within the roll, and means to move said head longitudinally into engagement with the ring-seetions. 1

15. A collapsible mandrel consisting of a plurality oflongitud i nal ly-extending roll-sections, means to'move said sections outwardly,

a ring-section on each roll-section, having a beveled inner face, a head within the roll having a beveled outer face, a threaded shaft, a nut.thereon, and arms connecting said nut and head.

16. A collapsible mandrel consisting of a plurality of longitud inally-extending roll-seetions tapering in width, alternate sections being inverselyarranged, a shaft, a rotatable sleeve thereon having right and left hand screw-threads, a nut on each screw-thread,

levers connecting the nuts-with the inverselyarranged roll-sections respectively, and links connecting the shaft and roll-sections. I

17. A collapsible mandrel consisting of a plurality of longitudinally-extending' roll-seetions tapering in width, alternate sections beinginversely arranged, a hollow'shaft, a retatable sleeve thereon having right and left hand screw-threads, a nut on each screwthread, levers connecting the nuts with the i nverscly-arranged roll-sections respectively, links connecting the hollow shaft and rollseetions, a threaded shaft extending through the hollow shaft, a nut on the threaded shaft, a head within the roll adapted to engage the roll-sections when expanded, and arms eon-' necting the head and nut, said arms extending through the hollow shaft.

In testimony of which invention I have hereunto setiny hand, at \Vilmington, on this th day of Februa -y; '1904 4 a EGBERT MOXHAM. Vlitnesses: f

HENRY DRURY, RALPH :DINSMORE. 

